peterdsharpe

6 ms·

1.
by peterdsharpe 1mo ago
$5 does not make sense, and there must be some qualifer on that we're missing. Napkin math: (27 minute flight) * (25000 lbm TOGW) * (Earth gravity) / (~10 average L/D) * (160 KTAS average) / (70% propulsive efficiency) &
2.
by peterdsharpe 1mo ago
There is a word for that. It is "heaviest", not "largest".
3.
by peterdsharpe 1mo ago
> Largest Electric Aircraft "Largest" is just straight-up a false claim. [Solar Impulse]( https://en.wikipedia.org/wiki/Solar_Impulse ) and [Helios]( https://en.wikipedia.org/wiki/AeroVir
4.
by peterdsharpe 2mo ago
`uv sync --upgrade`? It's in the docs
5.
by peterdsharpe 2mo ago
Why use this over Equinox's Module, plus jaxtyping? That seems like the cleaner (and more established) solution, but maybe there are pros/cons I'm not seeing.
6.
by peterdsharpe 3mo ago
Death of the AI race? This is the starting gun.
7.
by peterdsharpe 4mo ago
"Financially, what will take me to $1B?" -Greg Brockman, August 2017
8.
by peterdsharpe 4mo ago
Seriously going to use AI to write a reply that would take you 30 seconds?
9.
by peterdsharpe 8mo ago
Thank you for the kind words! :)
10.
by peterdsharpe 11mo ago
This is a desperation move from the LLM providers here. Just think: if you were Sam Altman, and you actually had strong evidence that practical AGI was as imminent as claimed - would you be spending your time building AI-slop TikTok and a s
11.
by peterdsharpe 11mo ago
There is a beautiful irony in your misspelling of Anno Domini as Anno Domani, for the Italian speakers in the room.
12.
by peterdsharpe 11mo ago
What is the benefit of this over `watch nvidia-smi`, possibly prepended with an `ssh` in the case of a remove server?
13.
by peterdsharpe 1y ago
I love the concept of this and hope Slate survives, but $27.5k is too expensive for what they're offering. With the Kia Soul at $21.5k and with more features, and the Honda Civic at the same cost, the value proposition isn't there
14.
by peterdsharpe 1y ago
This was a disappointing article: based on the provocative title, I was hoping to learn something new. Everything in here is already clear to anyone who has read the "Getting Started" page of uv, and I don't know anyone who i
15.
by peterdsharpe 1y ago
Yes, it is completely wrong. If this were a valid explanation, flat-plate airfoils could not generate lift. (They can.) Source: PhD on aircraft design
16.
by peterdsharpe 2y ago
Funny you should mention that! The surface of a trampoline can actually be modeled as a 2nd-order wave equation PDE, which uses a Laplacian spatial kernel - for the same reasons this is called Laplacian smoothing!
17.
by peterdsharpe 2y ago
This is a good question. It looks like Kalshi (which hosts the underlying market in question here) in fact does pay interest on both cash balances and open positions, at a reasonable market rate: 4.05%. https://kalshi.com/bl
18.
by peterdsharpe 2y ago
You imply that the title "King of America" is pejorative, but did he or did he not refer to himself as a king? As far as I can tell, he endorsed this title. To add on this, prediction markets currently put Trump Sr. as 8.5% likely
19.
by peterdsharpe 2y ago
> when it stops being laminar the flow separates Not true, laminar/turbulent and attached/separated are independent descriptors. Flow can be laminar+attached, laminar+separated (e.g., laminar separation bubbles), turbulent+atta
20.
by peterdsharpe 2y ago
...that's the joke.
21.
by peterdsharpe 2y ago
> literally no errors in its operation are tolerated Aircraft designer here, this is not true. We typically certify to <1 catastrophic failure per 1e9 flight hours. Not zero.
22.
by peterdsharpe 2y ago
Disagree. The kind of serious plagiarism that's alleged in cases like this, Claudine Gay, Marc Tessier-Lavigne doesn't happen by accident, it's deliberate. There are plenty of academics, both minorities and not, who are capab
23.
by peterdsharpe 2y ago
Solar can absolutely be modulated; in fact, it's perhaps the easiest grid-scale power source to modulate since this can be done solid-state: just tune the MPPT to operate off-peak if needed.
24.
by peterdsharpe 3y ago
This is not how unit conversions work.
25.
by peterdsharpe 3y ago
This is exactly the wrong time to use a LLM. Case in point: those coordinates are not in the Atlantic ocean.
26.
by peterdsharpe 3y ago
This is rule-breaking on HN; argue in good faith.
27.
by peterdsharpe 3y ago
Wow, Hilderman's quore is just factually incorrect where he says: "Fuel is 20 times more than the passenger weight" For most transport aircraft, passenger mass fraction is roughly 12%-18% depending on what's included (ca
28.
by peterdsharpe 3y ago
There is a difference between saying "We believe LK-99 is NOT a superconductor" and "We do not believe LK-99 is a superconductor". The former is a hypothesis, the latter is a rejection of a hypothesis. The latter is real
29.
by peterdsharpe 3y ago
Perhaps "safer than CO" is fair, but "much safer than CO" may be a bit of a stretch. H2S is the #2 cause of fatal chemical inhalations in the workplace, behind CO: https://www.bls.gov/opub/ted/2
30.
by peterdsharpe 3y ago
I think H2S is somewhat bigger of a safety risk than presented here. For example, check out this case where what you describe (battery rupture) happened, killing both occupants from H2S inhalation: https://web.archive.org/we

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